//
//  Tips.h
//  <4>Speaker
//
//  Created by chen on 16/9/7.
//  Copyright © 2016年 tyrad. All rights reserved.
//

#ifndef Tips_h
#define Tips_h


#endif /* Tips_h */



>> Action

//用代码的方式写action
SEL selector = @selector(speakClick:);
[_speakButton setTarget:self] ;
[_speakButton setAction:selector];

//如运行时用 NSString 找到选择器,那么可以 `NSSelectorFromString`
SEL mySelector = NSSelectorFromString(@"speakClick:")
